Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-06-14
2005-06-14
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S841000, C029S843000, C029S855000, C156S182000, 72, C356S237100, C427S008000
Reexamination Certificate
active
06904673
ABSTRACT:
Ink jet printing apparatus is employed to form a non-polar ink stop line around a chip site on the polar surface of an organic laminate substrate. The non-polar ink stop line acts to confine polar liquid flux from spreading after application of the flux to the chip site prior to chip joining. Excessive flux spreading results in insufficient flux being present at the chip site for the formation of good electrical connections during solder reflow upon chip joining.
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Blais Claude
Filteau Julie Nadeau
Langevin Pierre M.
Toutant Robert L.
Warren Alain
Arbes Carl J.
International Business Machines - Corporation
Pham Tim
Ulrich Lisa J.
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